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The density and moisture content of powder snow can vary widely; snowfall in coastal regions and areas with higher humidity is usually heavier than a similar depth of snowfall in an arid or continental region. Light, dry (low moisture content, typically 4–7% water content) powder snow is prized by skiers and snowboarders. [38]
Snow develops in clouds that themselves are part of a larger weather system. The physics of snow crystal development in clouds results from a complex set of variables that include moisture content and temperatures. The resulting shapes of the falling and fallen crystals can be classified into a number of basic shapes and combinations thereof.
Most snow studies use a fist or fingers for softer snows (very soft through medium) and a pencil (hard) or knife (very hard) below the hardness boundary of ice. Liquid water content (LWC) (or free-water content) is the amount of water within the snow in the liquid phase from either melt, rain, or both. Measurements are expressed as a volume or ...
And an impressive total of 5 inches of snow was once reported in just 20 minutes in Turin, N.Y. (Typically, a snow total of 2 to 3 inches an hour is considered "heavy.")
"Sea-effect snow is also a common phenomenon in parts of the world, namely Japan, where the same mechanisms are in place as lake-effect, but the moisture source instead of a lake is the sea."
Thanks primarily to lake-effect snow, the USA's snowiest big city is Syracuse, New York, which gets about 11 feet of snow per winter season, the National Weather Service said. It's also one of the ...
Lake-effect snow is produced as cold winds blow clouds over warm waters. Some key elements are required to form lake-effect precipitation and which determine its characteristics: instability, fetch, wind shear, upstream moisture, upwind lakes, synoptic (large)-scale forcing, orography/topography, and snow or ice cover.
Accompanying the snappy colder air and gusty winds that add to the chill will be lingering moisture. The combination of the cold air and moisture brought on some snow.